Esthetician Practice Exam FREE Esthetician Practice Cosmetic Chemistry and Ingredients Questions and Answers 2

Question 1

Which ingredient is commonly used as a humectant in skincare products to attract moisture from the environment?

Accepted Answer

Hyaluronic acid

Answer

Mineral oil

Answer

Zinc oxide

Answer

Salicylic acid

Question 2

What is the primary function of an emulsifier in a cosmetic formulation?

Accepted Answer

To blend oil and water phases together

Answer

To preserve the product from bacterial growth

Answer

To increase the product's SPF rating

Answer

To exfoliate dead skin cells

Question 3

Which of the following is classified as an occlusive moisturizing agent?

Accepted Answer

Petrolatum

Answer

Glycerin

Answer

Sodium hyaluronate

Answer

Aloe vera

Question 4

What role does tocopherol play in cosmetic formulations?

Accepted Answer

It serves as an antioxidant and helps stabilize the product

Answer

It acts as a surfactant to cleanse the skin

Answer

It functions as a chemical sunscreen filter

Answer

It works as a keratolytic exfoliant

Question 5

Which acid is a beta hydroxy acid (BHA) commonly used to treat acne-prone skin?

Accepted Answer

Salicylic acid

Answer

Glycolic acid

Answer

Lactic acid

Answer

Mandelic acid

Question 6

What is the purpose of a chelating agent such as EDTA in cosmetic products?

Accepted Answer

To bind metal ions that could destabilize the formula

Answer

To thicken the product consistency

Answer

To provide broad-spectrum UV protection

Answer

To lower the pH for better exfoliation